TITLE: GCN CIRCULAR NUMBER: 27054 SUBJECT: LIGO/Virgo S200208q : No significant candidates in TAROT - FRAM - GRANDMA observations DATE: 20/02/13 09:14:19 GMT FROM: Sarah Antier at APC E. Howell (OzGrav-UWA), S. Agayeva (SHAO), A. Baransky (Kyiv Uni), P. Hello (IJCLab), M. Boer (Artemis), N. Christensen (Artemis), L. Eymar (Artemis), S. Karpov (FZU), A. Klotz (IRAP), M. Masek (FZU), K. Noysena (Artemis, IRAP), S. Antier (APC), A. Coleiro (APC), D. Corre (IJCLab), M. Coughlin (UMN), D. Coward (OzGrav-UWA), J.G. Ducoin  (IJCLab), B. Gendre (OzGrav-UWA), D. A. Kann (HETH/IAA-CSIC), N. Kochiashvili (Iliauni), C. Lachaud (APC), N. Leroy (IJCLab), M. Prouza (FZU)C. Thoene (HETH/IAA-CSIC), D. Turpin (AIM-CEA), X. Wang (THU) report on behalf of the FRAM, TAROT and GRANDMA collaborations. We performed tiled observations of LIGO/Virgo S200208q event with the FRAM-Auger, FRAM-CTA-N, TAROT-Calern (TCA), TAROT-Chili (TCH), TAROT- Reunion (TRE) telescopes. FRAM-Auger is located at Pierre Auger Observatory. FRAM-CTA-N is located at Observatorio del Roque de los Muchachos. TCA is located at Calern site at the Cote d'Azur observatory. TCH is located at La Silla  ESO observatory (LaS/ESO). TRE is located at Les Makes astronomical observatory. The following table shows for each telescope: the delay in minutes from the trigger, which filter is used, the field of view of the telescope in degrees and the typical limiting magnitude (AB mag) for a  given exposure in seconds (s). +-------------+---------+----------+-------------+------------+ | Telescope   | Delay   | Filter   | f.o.v.      | Limiting   | |             | [min]   |          | [deg]       | Mag.       | |-------------+---------+----------+-------------+------------| | FRAM-Auger  | 1102    | R        | 1.0 x 1.0   | 18.0 (60s) | | FRAM-CTA-N  | 563     | R        | 0.45 x 0.45 | 17.0 (90s) | | TCA         | 453     | Clear    | 1.9 x 1.9   | 18.0 (60s) | | TCH         | 686     | Clear    | 1.9 x 1.9   | 18.0 (60s) | | TRE         | 1619    | Clear    | 4.2 x 4.2   | 17.0 (60s) | +-------------+---------+----------+-------------+------------+ We performed the following joint tiled observations [1] : +-------------+------------+------------+---------+---------+---------+ | Telescope   | TStart     | TEnd       | RA      | DEC     | Proba   | |             | [UTC]      | [UTC]      | [deg]   | [deg]   | [%]     | |-------------+------------+------------+---------+---------+---------| | FRAM-Auger  | 2020-02-09 | 2020-02-09 | 140.134 | -36.486 | 3.2     | |             | 07:22:34   | 07:24:34   |         | |         | | FRAM-Auger  | 2020-02-09 | 2020-02-09 | 139.470 | -35.514 | 5.5     | |             | 07:27:35   | 07:29:35   |         | |         | | -----       | -----      | -----      | -----   | -----   | -----   | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.894 | -36.037 | 0.9     | |             | 22:24:17   | 22:26:17   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 140.195 | -36.474 | 0.6     | |             | 22:28:36   | 22:30:36   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.353 | -36.037 | 0.8     | |             | 22:30:52   | 22:34:58   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.267 | -35.600 | 1.0     | |             | 22:35:11   | 22:39:17   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.806 | -35.600 | 1.1     | |             | 22:39:30   | 22:43:36   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.650 | -36.474 | 0.6     | |             | 22:43:50   | 22:47:56   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 140.046 | -35.163 | 1.4     | |             | 22:48:09   | 22:52:15   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 140.345 | -35.600 | 1.1     | |             | 22:52:34   | 22:56:40   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.511 | -35.163 | 1.4     | |             | 22:56:53   | 23:00:59   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 140.256 | -37.348 | 0.3     | |             | 23:01:13   | 23:05:19   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.403 | -36.911 | 0.3     | |             | 23:05:32   | 23:09:38   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 141.047 | -36.911 | 0.3     | |             | 23:09:53   | 23:13:58   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 140.739 | -36.474 | 0.5     | |             | 23:14:12   | 23:18:18   |         | |         | | FRAM-CTA-N  | 2020-02-08 | 2020-02-08 | 139.704 | -37.348 | 0.2     | |             | 23:18:31   | 23:22:37   |         | |         | | -----       | -----      | -----      | -----   | -----   | -----   | | TCA         | 2020-02-08 | 2020-02-13 | 209.879 | 55.692  | <0.1    | |             | 20:34:17   | 00:02:22   |         | |         | | TCA         | 2020-02-08 | 2020-02-13 | 213.093 | 55.692  | <0.1    | |             | 21:08:40   | 03:56:03   |         | |         | | TCA         | 2020-02-08 | 2020-02-13 | 210.181 | 53.837  | <0.1    | |             | 22:15:24   | 04:02:46   |         | |         | | TCA         | 2020-02-09 | 2020-02-13 | 216.307 | 55.692  | <0.1    | |             | 01:22:06   | 01:59:07   |         | |         | | TCA         | 2020-02-09 | 2020-02-13 | 213.409 | 51.981  | <0.1    | |             | 02:41:11   | 02:18:17   |         | |         | | TCA         | 2020-02-09 | 2020-02-13 | 213.258 | 53.837  | <0.1    | |             | 03:01:52   | 01:39:54   |         | |         | | TCA         | 2020-02-09 | 2020-02-13 | 274.550 | 76.105  | <0.1    | |             | 18:22:46   | 02:44:09   |         | |         | | TCA         | 2020-02-09 | 2020-02-12 | 212.913 | 57.548  | <0.1    | |             | 20:39:13   | 05:01:02   |         | |         | | TCA         | 2020-02-10 | 2020-02-13 | 207.104 | 53.837  | <0.1    | |             | 00:22:06   | 03:30:33   |         | |         | | TCA         | 2020-02-10 | 2020-02-13 | 216.335 | 53.837  | <0.1    | |             | 01:04:44   | 04:14:58   |         | |         | | TCA         | 2020-02-10 | 2020-02-13 | 268.857 | 77.960  | <0.1    | |             | 02:37:59   | 01:26:20   |         | |         | | TCA         | 2020-02-11 | 2020-02-13 | 216.277 | 57.548  | <0.1    | |             | 20:29:49   | 05:00:20   |         | |         | | TCA         | 2020-02-11 | 2020-02-13 | 207.507 | 51.981  | <0.1    | |             | 20:48:45   | 01:00:42   |         | |         | | TCA         | 2020-02-11 | 2020-02-13 | 207.879 | 50.125  | <0.1    | |             | 20:55:28   | 03:16:52   |         | |         | | TCA         | 2020-02-11 | 2020-02-13 | 277.229 | 77.960  | <0.1    | |             | 22:45:47   | 02:57:45   |         | |         | | TCA         | 2020-02-12 | 2020-02-13 | 210.458 | 51.981  | <0.1    | |             | 00:22:23   | 04:35:10   |         | |         | | TCA         | 2020-02-12 | 2020-02-13 | 210.714 | 50.125  | <0.1    | |             | 00:29:10   | 02:31:47   |         | |         | | TCA         | 2020-02-12 | 2020-02-13 | 216.360 | 51.981  | <0.1    | |             | 01:01:37   | 00:53:58   |         | |         | | TCA         | 2020-02-12 | 2020-02-13 | 208.223 | 48.270  | <0.1    | |             | 01:20:43   | 03:23:37   |         | |         | | TCA         | 2020-02-12 | 2020-02-13 | 210.950 | 48.270  | <0.1    | |             | 03:49:52   | 03:42:32   |         | |         | | -----       | -----      | -----      | -----   | -----   | -----   | | TCH         | 2020-02-09 | 2020-02-11 | 61.953  | -29.050 | <0.1    | |             | 00:26:26   | 03:46:32   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 52.108  | -16.323 | <0.1    | |             | 00:33:13   | 03:53:19   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 79.626  | -39.959 | <0.1    | |             | 02:23:45   | 07:33:16   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 64.380  | -31.818 | <0.1    | |             | 02:30:31   | 05:30:11   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 53.339  | -13.161 | <0.1    | |             | 02:37:16   | 03:27:16   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 135.000 | -49.050 | <0.1    | |             | 02:49:40   | 05:49:42   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 139.902 | -36.323 | 11.2    | |             | 04:02:01   | 08:51:13   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 139.525 | -34.505 | 25.6    | |             | 04:08:40   | 08:57:58   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 140.305 | -38.141 | 2.1     | |             | 04:15:24   | 04:45:05   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 108.615 | -45.889 | <0.1    | |             | 04:27:49   | 09:17:07   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 103.112 | -49.050 | <0.1    | |             | 04:34:35   | 09:23:51   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 140.372 | -30.000 | 2.1     | |             | 04:41:20   | 05:11:01   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 82.010  | -39.959 | <0.1    | |             | 05:13:14   | 05:42:55   |         | |         | | TCH         | 2020-02-09 | 2020-02-09 | 194.213 | 18.223  | <0.1    | |             | 08:20:13   | 08:22:13   |         | |         | | TCH         | 2020-02-09 | 2020-02-09 | 197.314 | 29.132  | <0.1    | |             | 08:35:17   | 08:41:36   |         | |         | | TCH         | 2020-02-09 | 2020-02-11 | 81.191  | -33.636 | <0.1    | |             | 08:45:08   | 00:57:58   |         | |         | | TCH         | 2020-02-10 | 2020-02-11 | 138.291 | -30.000 | 3.6     | |             | 02:49:30   | 09:10:20   |         | |         | | TCH         | 2020-02-10 | 2020-02-10 | 195.950 | 16.405  | <0.1    | |             | 08:25:51   | 08:32:09   |         | |         | | TCH         | 2020-02-10 | 2020-02-10 | 201.359 | 25.495  | <0.1    | |             | 08:46:04   | 08:52:23   |         | |         | | -----       | -----      | -----      | -----   | -----   | -----   | | TRE         | 2020-02-09 | 2020-02-09 | 136.216 | -32.727 | 21.6    | |             | 16:00:09   | 22:29:52   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 107.368 | -49.091 | <0.1    | |             | 16:13:27   | 22:42:24   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 82.286  | -36.818 | <0.1    | |             | 16:25:46   | 16:32:09   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 63.000  | -24.545 | <0.1    | |             | 16:38:59   | 16:45:22   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 68.108  | -32.727 | <0.1    | |             | 16:57:40   | 20:15:31   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 136.364 | -40.909 | 0.1     | |             | 17:23:24   | 23:53:02   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 67.500  | -24.545 | <0.1    | |             | 17:42:21   | 17:48:38   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 77.838  | -32.727 | <0.1    | |             | 17:55:32   | 18:01:55   |         | |         | | TRE         | 2020-02-09 | 2020-02-10 | 133.548 | -45.000 | <0.1    | |             | 18:27:28   | 00:56:21   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 72.000  | -36.818 | <0.1    | |             | 18:39:51   | 18:46:14   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 141.081 | -32.727 | 47.9    | |             | 18:53:07   | 22:11:00   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 141.818 | -40.909 | 0.4     | |             | 19:05:20   | 19:11:37   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 65.455  | -28.636 | <0.1    | |             | 19:22:57   | 19:24:57   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 77.143  | -36.818 | <0.1    | |             | 19:33:06   | 19:37:15   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 104.516 | -45.000 | <0.1    | |             | 19:44:04   | 23:01:34   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 70.130  | -28.636 | <0.1    | |             | 19:56:26   | 20:02:43   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 198.000 | 24.545  | <0.1    | |             | 20:22:25   | 23:39:48   |         | |         | | TRE         | 2020-02-09 | 2020-02-10 | 201.039 | 28.636  | <0.1    | |             | 21:13:01   | 00:30:48   |         | |         | | TRE         | 2020-02-09 | 2020-02-09 | 205.714 | 36.818  | <0.1    | |             | 23:14:19   | 23:20:37   |         | |         | | TRE         | 2020-02-09 | 2020-02-10 | 197.561 | 20.455  | <0.1    | |             | 23:58:59   | 00:05:17   |         | |         | | TRE         | 2020-02-10 | 2020-02-10 | 138.857 | -36.818 | 26.0    | |             | 01:09:08   | 01:15:25   |         | |         | +-------------+------------+------------+---------+---------+---------+ TStart and TEnd refers respectively to the time of the first and last exposure for a given tile. Observations are not necessarily continuous  in this interval. The Probability refers to the 2D spatial probability of the GW skymap enclosed in a given tile. These observations cover about 95.1% of the cumulative probability of the LALInference skymap created on 2020-02-10 21:14:05 (UTC). The coverage map is available at: https://grandma- owncloud.lal.in2p3.fr/index.php/s/XgtMhPRxcyL09gR/download?path=%2F&files=GRANDMA_S200208q_1581583078.svg No significant transient candidates were found during our low latency analysis [2,3]. GRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger Addicts) is a network of robotic telescopes connected all over the world with both photometry and spectrometry capabilities for Time- domain Astronomy [2](https://grandma.lal.in2p3.fr/). Details on the different telescopes are available on the GRANDMA web pages. [1] M. W Coughlin et al., MNRAS 2019, https://doi.org/10.1093/mnras/stz2485 [2] S. Antier et al., MNRAS 2019, https://doi.org/10.1093/mnras/stz3142 [3] K. Noysena et al., ApJ 2019, arXiv:1910.02770